<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.currentCity}}</div>
          </div>
        
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
      <div class="button-list">
          <div class="button-wrapper"
           v-for="item of hot" 
           :key="item.id"
           @click="handleCityClick(item.name)"
           >
            <div class="button">{{item.name}}</div>
          </div>
        
        </div>
      </div>
      <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id"  @click="handleCityClick(innerItem.name)">{{innerItem.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapState ,mapMutations} from 'vuex'
export default {
  name:'CityList',
  props:{
    hot:Array,
    cities:Object,
    letter:String
  },
  computed:{
    ...mapState({
      currentCity:'city'
    })
  },
  mounted() {
    this.scroll = new Bscroll (this.$refs.wrapper)
  },
  methods:{
    handleCityClick(city){
      // this.$store.dispatch('changeCity',city)
      // this.$store.commit('changeCity',city)
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch:{
    letter(){
      if(this.letter){
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
      // console.log(this.letter)
    }
  }
}
</script>
<style lang="stylus" scoped>
  @import  '~styles/varibles.styl'  
  .border-topbottom
    &:before
      border-color:#ccc
    &:after
      border-color:#ccc
  .border-bottom
    &:before
      border-color:#ccc
  .list
    position:absolute
    overflow:hidden
    top:1.59rem
    right:0
    bottom:0
    left:0
    .title
      line-heightL:.44rem
      background:#eee
      padding-lesft:.2rem
      color:#666
      font-size:.26rem
    .button-list
      overflow:hidden
      padding:.1rem .6rem .1rem .6rem
      .button-wrapper
        float :left
        width:33.33%
        .button
          margin:.1rem
          padding:.1rem 0
          text-align:center
          border:.02rem solid #ccc
          border-radius:.06rem
    .item-list
      .item 
        line-height:.76rem
        padding-left:.2rem
</style>
 
